CROOKED RIVER DIES: CUYAHOGA RIVER, OHIO Part 6

President George H. W. Bush's Press Conference at Rio De Janeiro Heads of State Earth Summit

Part 18

It's Your Decision: Clean Water. (Animated)

Part 1

CBS Nightwatch Discussion of Toxic Waste Disposal

Part 12

Al Freeman, Jr.

Part 7

Pupil's Response

Part 2

The Cities: a City Is to Live in - 1968

Part 3

The Highway and Its Environment

Part 3

Close Up

Part 5